body{
    padding-bottom: 50px;
}

.am_m_nav{
    position: fixed;
    left:0;
    bottom: 0;
    width: 100%;
    height: 50px;
    background: #fff;
    z-index:1;
    margin:0;
    border-top: 1px solid #ddd;
    padding:0;
}

.am_m_nav li{
    float: left;
    width: 20%;
    padding: 5px 0;
    display: flex;
    height: 100%;
}

.am_m_nav li a{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.am_m_nav li img{
    width: 0.23rem;
    height: 0.23rem;
    margin-bottom: 0.05rem;
}

.am_m_nav li span{
    font-size: 0.13rem;
    color: #9b9b9b;
}